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Finding the Fourth Proportional to 350.78, 484.00 and 203.36

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Solution

The fourth proportional to 350.78, 484.00 and 203.36 is: 280.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.78 : 484.00 = 203.36 : x
  2. Step 2: Convert to fraction form
    350.78/484.00 = 203.36/x
  3. Step 3: Cross multiply
    350.78x = 484.00 × 203.36
  4. Step 4: Simplify right side
    350.78x = 98,423.31
  5. Step 5: Solve for x
    x = 98,423.31/350.78
  6. Step 6: Final answer
    x = 280.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.